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| 1 | Band Engineering and Morphology Control of Oxygen‑Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution显示文摘Graphitic carbon nitride(g-C3N4)-based photocatalysts have shown great potential in the splitting of water.However,the intrinsic drawbacks of g-C3N4,such as low surface area,poor diffusion,and charge separation efficiency,remain as the bottleneck to achieve highly efficient hydrogen evolution.Here,a hollow oxygen-incorporated g-C3N4 nanosheet(OCN)with an improved surface area of 148.5 m2 g^−1 is fabricated by the multiple thermal treatments under the N2/O2 atmosphere,wherein the C–O bonds are formed through two ways of physical adsorption and doping.The physical characterization and theoretical calculation indicate that the O-adsorption can promote the generation of defects,leading to the formation of hollow morphology,while the O-doping results in reduced band gap of g-C3N4.The optimized OCN shows an excellent photocatalytic hydrogen evolution activity of 3519.6μmol g^−1 h^−1 for~20 h,which is over four times higher than that of g-C3N4(850.1μmol g^−1 h^−1)and outperforms most of the reported g-C3N4 catalysts. | Yunyan Wu Pan Xiong Jianchun Wu Zengliang Huang Jingwen Sun Qinqin Liu Xiaonong Cheng Juan Yang Junwu Zhu Yazhou Zhou | 2021 | Nano-Micro Letters2021，13，3： | 3 |
| 2 | The velocity field around two interacting cavitation bubbles in an ultrasound field显示文摘A model is developed to calculate the distribution of first-order velocity field caused by the coupled bubbles in an ultrasound field. Using this model, numerical investigations of velocity field have been made when the two identical bubbles are driven well below resonance by an acoustic field with pressure amplitude exceeding cavitation threshold. Three representative kinestates of the coupled bubbles were chosen for analyzing the velocity distribution of surrounding liquid. The results show that the nonlinear oscillations of a bubble pair affect violently the radial velocity distribution of surrounding liquid, especially in the expanding phase. Symmetry of the tangential velocity distribution implies a possibility of attraction or repulsion of the bubble pairs. | WANG ChengHui CHENG JianChun | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，7： | 2 |
| 3 | Acoustic band gaps of two-dimensional three-component composite显示文摘Numerical analyses of the band-gaps in the two-dimensional three-component periodic composite are presented in this paper. The three-component composite is composed of an array of coated cylinders embedded in a resin. The coated cylinder consists of a hard inner core and a soft coating, which has much smaller wave velocity and mass density than the matrix and the inner material. The calculated band gaps appear in a lower frequency domain in contrast to the two-component counterpart composite because of the localized resonance in the elastically soft coating ring. The influence of the properties of the different coating materials and the geometry of the crystal on the band gaps is also investigated. | ZHANG Shu and CHENG Jianchun*(State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China) | 2003 | Progress in Natural Science:Materials International2003，13，11： | 2 |
| 4 | Engineering Electronic Density and Coordination Environment of Mn–Nx Sites via Zn Cooperation for Quasi-Solid-State Zinc-Air Batteries显示文摘Due to the poor Fenton reactivity,single-atom Mn-based materials are generally identified as one of the most promising active catalysts for oxygen reduction reaction(ORR).Regulating the electronic density and coordination environment of atomically dispersed Mn centers is an effective strategy to enhance ORR activity of Mn-based materials.By introducing Zn sites,atomically dispersed Mn centers with multitudes of coordination(including Zn/Mn–Nx and Mn–Nx moieties)can be constructed to form Mn-based ORR catalyst(Zn/Mn-NC)with dual-atom sites.Around Mn–Nx sites,the Zn atoms can effectively modulate the electronic structure and coordination state of Mn centers in Zn/Mn-NC through d–d orbital coupling.The electronic interaction between Zn and Mn sites improves ORR activity,thereby optimizing the oxygen adsorption energy of Mn sites in Zn/Mn-NC and reducing the overall energy barrier.Zn/Mn-NC displays higher ORR half-wave potential than Pt/C(0.89 V vs 0.86 V).The quasi-solid-state zinc-air battery(ZAB)with Zn/Mn-NC as the cathode displayed excellent rechargeability,recyclability,and mechanical robustness.The strategy presented regulates the electronic density and coordination environment of singleatom Mn-based ORR catalysts in quasi-solid-state ZABs. | Daijie Deng Huixin Ma Suqin Wu Huan Wang Junchao Qian Jianchun Wu Huaming Li Cheng Yan Henan Li Li Xu | 2023 | Renewables2023，1，3： | 2 |
| 5 | Theoretical studies of pulsed photothennal phenomena in semiconductors显示文摘 | Cheng Jianchun Zhang Shuyi | 1993 | Journal of Applied Physics1993，74，： | 1 |
| 6 | Resolution of racemic γ-lactone flavors on Chiralpak AD by packed column supercritical fluid chromatography显示文摘 | XIE Jianchun CHENG Jie HAN Huilan | | 0，，03： | 1 |
| 7 | Resolution of racemic δ-lactone flavors on Chiralcel OB by packed column supercritical fluid chromatography显示文摘 | XIE Jianchun CHENG Jie SUN Baoguo | | 0，，： | 1 |
| 8 | Hippocampal neuron loss is correlated with cognitive deficits in SAMP8 mice显示文摘 | Guomin Li Haiyan Cheng Xuezhu Zhang Xuemei Shang Hui Xie Xin Zhang Jianchun Yu Jingxian Han | 2013 | Neurological Sciences2013，，6： | 1 |
| 9 | Characterizing the properties of ultrasonics propagating on the surface of materials with defect by Laser-ultrasonics method显示文摘一个激光 ultrasonics 方法被用来波浪在材料的表面上旅行出现描绘繁殖性质与在 2D 的表面下的缺点。缺点引起的 ultrasonics 的线性、非线性的繁殖性质在实验被检测了。一个理论模型被建议并且过去常学习缺点引起的 ultrasonics 的线性、非线性的性质。当有限振幅 ultrasonics 与表面下的缺点在材料的表面上宣传时,数字结果显示非线性的超声的波浪将是激动的。理论分析证实非线性的波浪被鼓掌缺点的接口而不是 ultrasonics 的模式变换引起。 | XU Xiaodong CHEN Xiang LI Kaiyuan LIU Xiaojun CHENG Jianchun Christ Glorieux | 2011 | Chinese Journal of Acoustics2011，30，4： | 1 |
| 10 | A Sim-ple Hybrid Wire-wireless Fiber Laser Sensor by DirectlyPhotonic Generation of Beat Signal显示文摘 | Shengchun Liu Liang Gao Zuowei Yin Yuechun Shi Liang Zhang Xiangfei Chen and Jianchun Cheng | 2011 | Applied Optics2011，50，12： | 1 |
| 11 | Theoretical investigation of laser-generated guided waves in hollow cylinders显示文摘The problem of the laser-generated guided elastic waves in hollow cylinders is inves-tigated numerically by using the method of eigen-function expansion. The explicit expression of the transient waveform is given for the case of the outer surface of the hollow cylinder beat axi-symmetrically by four laser pulses with same energy. The characteristics of the transient waveform are explained based on the dispersive relations. | TANG Liguo CHENG Jianchun WANG Jinlan(The State Key Laboratory of Modern Acoustic, Nanjing University Nanjing 210093) | 2002 | Chinese Journal of Acoustics2002，21，3： | 1 |
| 12 | Acupuncture improves cognitive deficits and regulates the brain cell proliferation of SAMP8 mice显示文摘 | Haiyan Cheng Jianchun Yu Zhiguo Jiang Xuezhu Zhang Cunzhi Liu Yingmei Peng Fuyan Chen You Qu Yujie Jia Qingfei Tian Chuan Xiao Qin Chu Kun Nie Bohong Kan Xiaolin Hu Jingxian Han | 2007 | Neuroscience Letters2007，，2： | 1 |
| 13 | Carbon armour with embedded carbon dots for building better supercapacitor electrodes显示文摘The microstructure design of electrode material is a crucial point to optimize the supercapacitor’s electrochemical properties.In this work,a Bi-based nanocomposite with a three-layer structure(Bi–Bi_(2)O_(3)@carbon armour(CA)/carbon dots(CDs))is synthesized and investigated.This material inherits high capacitance and high activity from bismuth-based materials,the coated CA protects the structure from complete oxidization and improves surface hydrophilicity.Furthermore,CDs in CA can enhance the ion conduction efficiency between the catalyst,carbon membrane,electrolyte.As a consequence,the specific capacitance of the electrode reaches 973 F·g^(−1)under 1 A·g^(−1),the energy density achieves 32.5 Wh·kg^(−1)with a power density of 266.9 W·kg^(−1),with impressive electrochemical stability that Coulomb efficiency of the electrode remains about 100%after 5000 cycles.Furthermore,in-situ Fourier transformation infrared(FT-IR)analyzes the structure evolvement of the material during synthesis and finds that the annealing process of the material removes a great number of oxygen-containing groups of CA and CDs,generating oxygen vacancies,defects,thus active sites,which enhance the capacitance of the material. | Yuanyuan Cheng Yixian Liu Chen Chu Yunliang Liu Yaxi Li Ruqiang Wu Jianchun Wu Chunqiang Zhuang Zhenhui Kang Haitao Li | 2023 | Nano Research2023，16，5： | 1 |
| 14 | Band gaps of lower-order Lamb wave in thin plate with one-dimensional phononic crystal layer:Effect of substrate显示文摘 | Gao Jian Zou Xinye Cheng Jianchun | | 0，，02： | 1 |
| 15 | Large one-dimensional band gaps in three-component phononic crystals plates显示文摘 | Chen Jiujiu Chan H L W Cheng Jianchun | | 0，，4： | 1 |
| 16 | Numerical Analysis on Laser-Generated Guided Elastic Waves in a Hollow Cylinder显示文摘 | Liguo Tang Jianchun Cheng | 2002 | Journal of Nondestructive Evaluation2002，，2： | 1 |
| 17 | Ultrasound focusing with metamaterial显示文摘Ultrasonic waves,although not audible,naturally exist at high frequencies.Ultrasound can be controlled and unitized in various scenarios.Well-known examples are bats and dolphins,which produce ultrasound and detect the reflected signal for navigating and hunting. | Jianchun Cheng | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，2： | 0 |
| 18 | Influence of embedded cell on formation of broad acoustic band-gap in the three-component crystal slab显示文摘The influence of embedded cell on the formation of broad acoustic band-gap in the three-component crystal slab is analyzed by calculating the acoustic transmitted energy of the epoxy resin matrix with one embedded cell, which consists of the elastically soft rubber coat and the inner core steel cylinder. It is found that the broad band-gap in the three-component crystal slab results from localization of the acoustic wave energy in the rubber coat for a broad ultrasonic frequency interval. Comparison between experiments and calculations shows good agreement. | HUA Jia ZHANG Shu CHENG Jianchun | 2005 | Progress in Natural Science:Materials International2005，15，10： | 0 |
| 19 | Effect of Chromium Micro-alloying on the Corrosion Behavior of a Low-carbon Steel Rebar in Simulated Concrete Pore Solutions显示文摘A new low-cost corrosion-resistant rebar(HRB400 R) was designed and fabricated by chromium micro-alloying. The effects of Cr on the passivation and corrosion behavior of this rebar in the simulated concrete pore solutions were studied systematically, and its improved corrosion resistance was revealed. In the Cl--free saturated Ca(OH)_2 solution, the HRB400 R rebar presented nearly the same passive film and similar passivation ability compared to the common carbon steel rebar. In the long-term immersion corrosion test in the Cl--contained Ca(OH)_2 solution, the HRB400 R rebar presented improved corrosion resistance and obvious longer passivation-maintaining period. Micro-alloying of Cr element in the rebar matrix enhanced its corrosion resistance against Cl--attack and retarded the corrosion initiation in the matrix. In the alkaline Na Cl salt spraying test, the HRB400 R rebar also presented obviously lower mass-loss rate. The enrichment of Cr element in the rust layer improved its retardant effect to the penetration of aggressive medium, and decreased the corrosion propagation rate of the rebar. | 宋丹 蒋金洋 孙伟 MA Han ZHANG Jianchun CHENG Zhaojun JIANG Jinghua AI Zhiyong | 2017 | Journal of Wuhan University of Technology(Materials Science)2017，32，6： | 0 |
| 20 | An eigenfunction expansion method for the elastodynamic response of an elastic solid with mixed boundary surfaces显示文摘The method of eigenfunction expansion is one of the most elegant methods for solving elastodynamic problems. The solution obtained from it is more concise than that obtained from the integral transform technique. Traditional eigenfunction expansion method is used for the elastodynamic problems with displacement and traction boundary conditions. In this paper, the method is generalized to study the elastodynamic response of an elastic solid with mixed boundary surfaces, and the exact analytical solution is derived. The dynamic response of a finite-length solid aluminum cylinder with two mixed end boundaries is numerically evaluated. The result com- puted from the analytical solution agrees very well with that obtained from finite element method (FEM). | Liguo Tang Jianchun Cheng | 2008 | Progress in Natural Science:Materials International2008，18，9： | 0 |
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